{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical"], "input": "PBMCs , isolated from blood samples of four male and four female healthy individuals , were exposed in vitro for 18h to either a dioxin - like polychlorinated biphenyl ( PCB126 , 1 mu M ) , a non - dioxin - like polychlorinated biphenyl ( PCB153 , 10 mu M ) , a brominated flame retardant ( BDE47 , 10 mu M ) , a perfluorinated alkyl acid ( PFOA , 10 mu M ) or bisphenol ( BPA , 10 mu M ) ."}
{"Chemical": ["dioxin", "polychlorinated biphenyl", "PCB126", "PCB153", "BDE47", "perfluorinated alkyl acid", "PFOA", "bisphenol", "BPA"]}